單項選擇題How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates()。

A.Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface
B.Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic
C.Configure many sub-interfaces on the same subnet
D.Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces


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1.單項選擇題Which command reveals the last method used to powercycle a router?()

A.show reload
B.show boot
C.show running-config
D.show version

3.單項選擇題Which IPV6 routing protocol uses multicast group FF02::8 to send updates?()

A.RIPng
B.OSPFv3
C.IS-IS for IPv6
D.static

6.單項選擇題A company implements video conferencing over IP on their Ethernet LAN. The users notice that the network slows down, and the video either stutters or fails completely. What is the most likely reason for this?()

A.minimum cell rate (MCR)
B.quality of service (QoS)
C.modulation
D.packet switching exchange (PSE)
E.reliable transport protocol (RTP)

7.單項選擇題指定邏輯通道備份主接口使用的命令是()。

A.standby logic-channel logic-channel-number [priority]
B.standby nterface interface-type interface-number
C.logic-channel logic-channel-number
D.dialer map protocol next-hop-address dialer-string[logic-channel logic-channel-number]

8.多項選擇題Which two statements best describe the wireless security standard that is defined by WPA (Choose two.)()。

A.It specifies use of a static encryption key that must be changed frequently to enhance security
B.It requires use of an open authentication method
C.It specifies the use of dynamic encryption keys that change each time a client establishes a connection
D.It requires that all access points and wireless devices use the same encryption key
E.It includes authentication by PSK

10.單項選擇題When configuring a serial interface on a router, what is the default encapsulation?()

A.atm-dxi
B.frame-relay
C.hdlc
D.lapb
E.ppp

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